Hello.
Our spoke ISP failed for 4 minutes. Once it returned, our
C2921 DMVPN
spoke remained in the NHRP state (no production traffic flowed from this spoke to the hub. This was remediated by shutting then no-shutting the spoke
tunnel interface
(It was fortunate I was physically at the branch spoke to fix this.)
QUESTIONS:
1. Why did this spoke not return to "UP" status when the ISP link became healthy?
2. What can be done so that this symptom does not re-occur?
Thank you.
